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Circularly polarized eddy electromagnetic wave generating element based on eight-arm Archimedean spiral antenna

An Archimedes spiral and vortex electromagnetic wave technology, applied in electrical components, waveguide-type devices, radiating element structure and other directions, can solve the problems of complex feeding network, bulky antenna, limited application scenarios, etc. Complexity, cost reduction, effect of reduced starting radius

Inactive Publication Date: 2019-10-01
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the disadvantages of complex and expensive feed network, bulky antenna, and limited application scenarios in the prior art, and propose a circularly polarized vortex electromagnetic wave generating element based on an eight-armed Archimedes spiral antenna

Method used

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  • Circularly polarized eddy electromagnetic wave generating element based on eight-arm Archimedean spiral antenna
  • Circularly polarized eddy electromagnetic wave generating element based on eight-arm Archimedean spiral antenna
  • Circularly polarized eddy electromagnetic wave generating element based on eight-arm Archimedean spiral antenna

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Embodiment 1

[0026]First, the present invention will be introduced in detail in conjunction with the accompanying drawings, which can generate left-handed circular polarization and topological core number l= A specific embodiment of the Archimedes spiral antenna for 0, 1, 2 vortex electromagnetic waves.

[0027] Step 1: Design the working mode l= 0,1,2, working frequency 2-3GHz, Archimedes spiral antenna with center frequency 2.45GHz, figure 1 It is a structural diagram of the Archimedes spiral antenna capable of generating vortex electromagnetic waves in the present invention. from figure 1 It can be seen from the figure that the Archimedes spiral antenna of the present invention is mainly composed of a dielectric substrate plate, a right-handed metal wire positioned at the front of the dielectric substrate plate, a grounded metal ring positioned at the back of the dielectric substrate plate, eight feeding coaxial lines and a distance of Dielectric substrate plate 0.25λ 0 Composed o...

Embodiment 2

[0030] Step 1: Design the working mode l= 0,-1,-2, Archimedes spiral antenna with a working frequency of 2-3GHz and a center frequency of 2.45GHz, figure 1 It is a structural diagram of the Archimedes spiral antenna capable of generating vortex electromagnetic waves in the present invention. from figure 1 It can be seen from the figure that the Archimedes spiral antenna of the present invention is mainly composed of a dielectric substrate plate, a right-handed metal wire positioned at the front of the dielectric substrate plate, a grounded metal ring positioned at the back of the dielectric substrate plate, eight feeding coaxial lines and a distance of Dielectric substrate plate 0.25λ 0 Composed of metal reflectors. The material used for the dielectric substrate plate is Rogers RO4350B, with a relative permittivity of 3.48 and a loss tangent of 0.0037. Due to the radius r of the inner and outer ends of the metal wire 2 and r 1 Respectively affect the highest operating ...

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Abstract

The invention discloses a circularly polarized eddy electromagnetic wave generating element based on an eight-arm Archimedean spiral antenna, which relates to the field of radio frequency antennas. The circularly polarized eddy electromagnetic wave generating element comprises a dielectric substrate plate, a right-handed metal wire, a grounding metal ring, a coaxial feed, a micro-strip feed network and a metal reflecting plate. The right-handed metal wire is positioned on the front of the dielectric substrate plate. The grounding metal ring is positioned on the back of the dielectric substrateplate, and is connected with the eight-channel micro-strip feed network through the coaxial feed. The micro-strip feed network is a T-shaped junction with multi-stage sections and specified phase shift. The metal reflecting plate is located below the side, where the coaxial feed is arranged, of the dielectric substrate plate, and is electrically connected with the coaxial feed. By adopting an eight-arm Archimedes spiral antenna with a single micro-strip feed network and based on external feeding, the size of the antenna and the complexity of the feed network can be reduced, and eddy electromagnetic waves with adjustable polarization and OAM modes can be generated within a certain bandwidth.

Description

technical field [0001] The invention relates to the field of radio frequency antennas, in particular to a circularly polarized vortex electromagnetic wave generating element based on an eight-armed Archimedes spiral antenna. Background technique [0002] In 1992, Allen L et al. published the article "Orbital angular momentum of light and transformation of LaguerreGaussian Laser modes" in "Physical Review A Atomic Molecular" No. 45 No. 11, pointing out that the electromagnetic (EH) field can not only carry energy, but also Electromagnetic waves that can carry spin angular momentum (carrying orbital angular momentum (OAM) have a helical phase structure e -jlϕ , l is the number of topological cores of OAM, ϕ is the orientation angle. Theoretically, OAM has an infinite number of states, which are mutually orthogonal, which is of great significance for expanding the capacity of the communication system. In recent years, its application in radio frequency has become a hot spo...

Claims

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Application Information

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IPC IPC(8): H01P1/17H01Q1/36H01Q1/38H01Q1/50
CPCH01P1/17H01Q1/36H01Q1/38H01Q1/50
Inventor 郭忠义宫玉彬杨阳郭凯沈飞周红平
Owner HEFEI UNIV OF TECH
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